Gorakhpur: An eleven-year-old boy on Thursday succumbed to encephalitis at BRD Medical College hospital here taking this year's toll due to the viral disease in Eastern Uttar Pradesh to 129.

As many as 11 patients, suffering from suspected encephalitis, were admitted to the hospital during past 24 hours, a senior health official said.

A total of 658 encephalitis patients were admitted in different government hospitals of Gorakhpur and Basti division this year, of which 129 died, officials said.

The cases have been coming from seven districts of Gorakhpur-Basti divisions, Bihar and Nepal.

At least 90 percent of the cases were reported to be of acute encephalitis syndrome which is caused by the viruses present in contaminated water, while rest 10 percent cases were of Japanease Encephalitis caused by mosquito bite, Additional Director Health, Diwakar Prasad said.